A loop transfer recovery (LTR) design method with a proportional integral (PI) observer is proposed. It is based on the H∞ optimal observation via factorization approach. A general controller structure consisting of a robust linear functional observer and state feedback is used in the feedback control system. A parameterization for all PI observers is given. The interconnection between the optimal LTR problem and H∞ optimal observation problem using PI observer for the given system is shown. Analysis indicates that they are exactly the same. Based on the results of the H∞ optimal observation, the optimal LTR design is solved in the general framework of the H∞ optimization. The proposed method is effective for both minimum phase and non-minimum phase systems. The loop transfer and the disturbance attenuation properties can be recovered simultaneously using this method. A systematic design procedure of optimal LTR based on H∞ optimization is presented.
|Number of pages||5|
|Journal||Proceedings of the American Control Conference|
|State||Published - 1997|
|Event||Proceedings of the 1997 American Control Conference. Part 3 (of 6) - Albuquerque, NM, USA|
Duration: Jun 4 1997 → Jun 6 1997
ASJC Scopus subject areas
- Electrical and Electronic Engineering